Scraper.



II. J. BIGKLE & M. WILSON.

SGRAPER.

APPLICATION FILED JULY 8, 1908.

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SGRAPER.

APPLICATION FILED JULY 8, 1908.

934,653, Patented Sept. 21, 1909.

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UNITED STATES PATEN FFTQE.

HENRY JAMES BICKLE AND MAGNUS WILSON, OF GLADSTONE, MANITOBA, CANADA.

SGRAPER.

Specification of Letters Patent. Patented Sept, 21, 1969,

AppIication filed July s, 1908.

Serial No. 442,575.

To all whom it may concern:

Be it known that we, HENRY J AMES BIOKLE and Marines lVILsoN, both of the town of Gladstone, in the Province of Manitoba, Canada, have jointly invented certain new and useful Improvements in Scrapers, of which the following is the specification.

Our invention relates to improvements in scrapers, such improvements being particularly directed to a machine as described in United States Patent #866615, and the objects of the invention are firstly, to provide means which will prevent the pan from dumping when it is lifted after having taken a fill, secondly to provide means which will cause the pan when dumped to clear itself of the material carried by it, and thirdly to provide means to reinforce or strengthen the pan when filling. To this end our invention consists in certain details of construction and combination of parts, as hereinafter more fully set forth in the specification, and later claimed.

Figure 1 is a side elevation of the scraper with the improvements attached, one of the carriage wheels being removed. Fig. 2 is a plan view of the scraper as in Fig. 1. Fig. 3 is an enlarged detailed side elevation of the locking bar in position within the drag bar, a portion of the drag bar being removed and showing an attachment carried by the locking bar. Fig. at is a view of the locking bar in an alternative position to that shown in Fig. 3. Fig. 5 is a side elevation of a portion of the pan and an attachment on the pan adapted to engage with the pan suspending bar, the pan being shown in the dumped position.

In the drawings like characters of reference indicate corresponding parts in each figure.

With a machine constructed in accordance with the description as given in the heroin before mentioned patent it has been found that it was almost impossible to throw the lever, after having taken a fill, quickly l enough to prevent the pan from dumping before it was raised. Also it has been found that the material after the pan has been dumped takes a considerable time to pass completely from the pan as the tip of the pan drags on the ground and prevents the earth from escaping quickly enough. It was also noticed in using the machine that a considerable strain was brought on the pan when filling, which it would be better, if possible, to avoid. This was caused by the pan tending to dig deeper into the ground as the scraper advanced.

To overcome the difficulties just described is the object of the present invention.

Referring now to the drawings 1 1 represent the carriage wheels, and 2 the pan which is of the ordinary form.

is the bar suspending the pan, such bar being fastened by bolts 4 passing through the extending ends 5.

6 are stub axles secured to the members 5 and upon which are mounted the carriage wheels 1.

7 are side bars which form practically the framework of the scraper, such bars being pivoted or centered on the stub axles and passing rearwardly behind the pan where they are connected to drag bars as later de scribed.

8 is the tongue secured to the draft bars 8 which pass forwardly of the scraper and are connected with the stub axles.

9 is a caster wheel supporting the rear end of the drag bar and 10 is a seat fastened to the drag bar in the usual manner.

11 is a segment firmly secured to the side of the drag bar and forward of the seat.

12 is a lever operating over the segment, such lever being supplied with the usual detent l3 and hand latch 14:, the detent engaging with the segment.

15 is a cross shaft extending at right angles from the lower end of the lever and mounted in bearings formed in a standard 16 at one end and in bearings formed in the body of the segment at the other.

On the rod is centered a short link 17 which turns with the rod and the link is interconnected with the locking bar as later described.

The portions hereinbefore described are of the same form as the corresponding parts, as described in the patent hereinbefore mentioned, particular attention being paid to that portion of the description which re lates to the second embodiment of the machine in which the pull scraper is described.

The drag bar 18 instead of being a tube as before is of channel bar cross section, the uprights 19 and 20 of which are interconnected by a longitudinal spacing plate 21. The side bars 7 are fastened to the uprights 19 and 20 in the same manner as the corresponding bars in the prior patent are fastened to the tubular drag bar. The uprights have each opposing portions 22 cut away in I l bar 29 assume relatlvely the. positionsshown theirupper sides thereby. forming two over,- hanging portions 23 and 24:.

25 is the locking bar which is adapted to slide between the uprights 19 and 20 and over the interconnecting plate 21, and it has a portio1i'26 cutaway" forming at the sides two overhanging members 27- 'and'QS.

29 is a flat extending V-shaped bar secured to the rear ofthepan and designed;

so, that the rearmost portion 29. may, pass into the incision formed in thelocking bar.

It is to be, understood.- that although the portions. j ust. described, 6., thelockin'g bar; the drag bar; and the, V.-shapedbar, are somewhat modified in form. to those described in the patent above referred to, yet they serve. the same purpose, and. fulfill the same conditions asthey. did formerly. The. changes in constructlon have been made for.

thereason that, it hasbeen found'moreconvenient to place the attachments on a channel-shaped drag bar than on a tubularbar. The rearend of thelocking bar is. pivotally interconnectednvith thearm 17 by a pin 30.

31. is a triprodfpivotally. interconnected, with. the. uprights 19 and 20 by a. cross pin 32. Thetrip is positioned, directly beneath the free end of the locking bar and hasan enlargement 33 formed, at the upper.v side of-the extending end.'

84 is a fiat. springsecuredto the cross plate. 35 and. extending beneath. the trip rod, the

tendency of; the "spring. being to continuously force the bar upwardly.

36 is an angularshaped tripbar secured to the trip rod; by bolts 37. The free. end

' of. the bar passing normally immediatelyto theside of the upright 19. andextending ups wardly.

38 is an enlargement formedon the under side of the lockingbar,towardthefree end of the bar.

' Iniorder to better understand the, valueiof;

these latter attachments and interconnect ons, we w1ll1now describe, theiruse, assuinr ing the pan to be 111 the, down'orfilllng posi- 'tio n. In this case the portion 29, of.-.the. bar.

tendencywvould be for. the pan to dump if;

it were not, held by the locking .bar, that is by the overhanging .portion28, The portion,

29,-of,-the' bar,29 'can11ot release itself until the overhanging portion 28 passesffrom above it, and this willinot take place until the portion 29. reaches approximately the position shown in Fig. 4. Iff-thc locking bar.

were drawn backwardly ,tothis latter position, and the lever not. thrown quickly.

enough it' would escape andthepan. would;

dump. However, with the attachments here:

in described, it will-be seen that immediately the locking bar and the portion 29 of the in'Fig. 4 the portion 29 is abutting the up wardly directed arm of the trip bar 36. In this position it is impossible, even if the locking bar be released, for the portion 2.9

to escape as any upward tendency is ow'ercome by the bar 362 Vith the portion 29 so held, the locking bar is drawn back by the lever, until the overhanging portion 27* passes partially over. the edge of: the portion 29 As it passes over, the enlargement 38, travels toward; and engages with the. enlargement 33 forcing the trip rod downwardly, therebyireleasingthe trip plate from.

the portion 29,, and; the lockingv bar. alone holds the. portion 29, and controls the pan until. it. is raised completely.

4:0 and: 41. are similar. bars securely fastened by bolts 42to the sides of the. pan, such. bars. being inclined upwardly. and; having.

theirupper ends considerably. above the pan. The. bars. have. their. upper. extremities e3 turned. atan. angle to the body portion and such ends are adapted to. engage with the bar-s8, when. the. pan is in, thefilling position, that is down. In. this wayit will, be seen thatsuch bars tendto reinforce thepan, as. they form. when. operating. a. tie between the pan and thebars 8. Assoon as the panv is raised, thebars 40.and 41. pass up? wardly from the bars 8. and in no manner.

interfere further. withv the operation of the pan.

14 are, plates secured bybolts 45 to the pa n'one at each side and directly opposite. The plates have, each, one of. their ends 46 at right'angles to body portioinorin.other.

words, directed outwardlyfromthe sideof the pan, such endsbeingadapted to engage.

in certain positions of the pan with the pan suspending bar 3. Theother endsof such.

plates are centered on the bolts 4. and the plates are bent at 47 to pass over. the outer.

face of theextending ends 5 of the bar, 3.

lVithouttheattachments 414:, 45, 4:6 andf J,

the point of the scraper, when dumped,-

would be forced backitill; the scraper assumed practically, a horizontal .position while turning on the stub axles. As soon as lt too k this, position, it; would: turn on the bolts and incline backwardly, and the back of the scraper wouldbe jammed against the cross bars which hold the releasingbar. Conse:

quently, when theinachine' continued to go.

forward, the scraper could-not rise. on ac-.

count of jamming, and the.earthwouldinot escape quickly. With the attachments, however, when the pan assumes the vertical position, as shown in Fig. 5, the attachmentsengage with the bar, 5 and the pan, cannot swing further. withoutturning.onthe stub.

This meansjthat. when the team isadvancing, the pressure of. the earth on the point of. the scraper. tends to swing italmost.

axles.

directly upwardly turning on the stub axles, and there is no binding against the cross bars at the back. Even if there were such a binding, the point of the scraper would have to be a considerable distance above the ground. Consequently, the earth is a great deal freer to pass from the pan.

hat we claim as our invention is:

1. In a scraper the combination with the suspended pan, the V shaped bar extending l rearwardly from the pan, the drag bar and the locking bar slidably secured within the drag bar; the said locking and drag bars having each incisions therein to receive and retain the V shaped bar, of means adapted to retain the V shaped bar within the incision within the locking bar when the locking bar is in the position which allows the escapement of the V shaped bar, as and for the purpose specified.

2. In a scraper the combination with the suspended pan, the V shaped bar extending rearwardly from the pan, the drag bar and the locking bar slidably secured within the drag bar, both of such bars having incisions therein forming overhanging portions adapted to retain the V shaped bar, of a spring pressed trip rod secured to the drag bar; a trip bar extending upwardly from the rod and designed to engage with the V shaped bar, and means for forcing the bar downwardly at a pre-determined instant, as and for the purpose specified.

3. In a scraper the combination with the suspended pan, the V shaped bar extending rearwardly from the pan, the drag bar and the locking bar slidably secured within the drag bar, both of such bars having incisions therein forming overhanging portions adapted to retain the V shaped bar, of a trip rod I pivotally interconnected with the drag bar, such rod. having an enlargement at the end thereof adapted to engage with an enlargement formed on the under side of the locking bar, a spring normally forcing the trip rod against the under side of the locking bar and a trip bar designed to engage with the V shaped bar at a predetermined instant, as and for the purpose specified. 1

at. In a scraper the combination with the suspended'pan, the V shaped bar extending rearwardly from the pan, the drag bar and the locking bar slidably secured within the drag bar, both of such bars having incisions therein forming overhanging portions adapted to retain the V shaped bar, of means for retaining the V shaped bar within the looking bar incisions when the overhanging portions are free of the V shaped bar, and means for causing such latter means to disengage from the V shaped bar when the overhanging portions pass over the V shaped bar, as and for the purpose specified.

5. In a scraper the combination with the pivotally suspended pan and the draft bars, of a set of hooked bars securely fastened to the pan and extending upwardly and forwardly, the hooked ends of such bars being adapted to engage with the draft bars when the pan is in the filling position, as and for the purpose specified.

6. In a scraper the combination with the pan and the pan suspending bar, of a set of plates secured one to each side of the pan, such plates having each, one of their ends extending outwardly from the pan and adapted to engage with the suspending bar when the pan is in the overturned position, as and for the purpose specified.

7 In a scraper the combination with the pan and the pan suspending bar pivotally interconnected to the pan by bolts, of a set of similar plates secured to the pan and having their one end directed outwardly from the pan and adapted to engage with the suspending bar when the pan is in the over turned position, and having their other end centered on the bolts interconnecting the pan with the suspending bar, as and for the purpose specified.

Signed at Gladstone, in the Province of Manitoba, this 13 day of June 1908.

HENRY JAS. BICKLE. MAGNUS WILSON.

Witnesses E. G. EDWARDS, S. GEORGE. 

